CVE-2025-43529

Exp

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 26. CVE-2025-14174 was also issued in response to this report.

Published: 2025-12-17 Last update: 2026-04-03 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-43529 is rated Critical Active Threat (98.1/100): CVSS High severity, with high exploitation likelihood (EPSS 8.00%, 94th percentile). CISA KEV confirms active exploitation (added 2025-12-15) affecting Apple / Multiple Products. a weakness (CWE-416) Unauthenticated remote administrative access may be possible. EPSS rose +7.83% over the last day, indicating growing attacker interest. The CISA remediation deadline has passed—treat as an emergency patch priority.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

CISA KEV Record for CVE-2025-43529

Name: Apple Multiple Products Use-After-Free WebKit Vulnerability · CISA KEV detail

Exploit added: 2025-12-15

Action due: 2026-01-05

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Exploit prediction scoring system (EPSS) score for CVE-2025-43529

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.17% 8.00% +7.83%
2 2026-05-12 0.12% 0.17% +0.04%
3 2026-05-10 — 0.12% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-43529

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2025-43529

OS Trackers for CVE-2025-43529

vendor priority summary link
debian end-of-life CVE-2025-43529 end-of-life priority: Debian including 2 source packages (webkit2gtk, wpewebkit), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 7, open 3. https://security-tracker.debian.org/tracker/CVE-2025-43529
redhat high — https://access.redhat.com/security/cve/CVE-2025-43529
suse high CVE-2025-43529 severity important: SUSE including 104 source package names (2.2.0-4.55:gpg2-2.4.4-slfo.1.1_2.1, 2.2.1-7.2:gpg2-2.4.4-slfo.1.1_2.1, …), 491 product×package rows across 71 product lines (Container suse/sl-micro/6.0/baremetal-os-container, Container suse/sl-micro/6.0/base-os-container, … (71 product lines)): Fixed 473, First Fixed 18. https://www.suse.com/security/cve/CVE-2025-43529/
ubuntu high CVE-2025-43529 high priority: Ubuntu including 5 source packages (qtwebkit-opensource-src, qtwebkit-source, webkit2gtk, webkitgtk, wpewebkit), 36 status rows across 8 suites (bionic, focal, jammy, noble, plucky, questing, upstream, xenial): ignored 14, DNE 13, released 5, needs-triage 4. https://ubuntu.com/security/CVE-2025-43529

Affected software / configurations for CVE-2025-43529

Vendor Product Version Raw CPE
apple safari < 26.2 cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
apple ipados < 18.7.3 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple ipados >= 26.0, < 26.2 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple iphone_os < 18.7.3 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple iphone_os >= 26.0, < 26.2 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple macos >= 26.0, < 26.2 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple tvos < 26.2 cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
apple visionos < 26.2 cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*
apple watchos < 26.2 cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

References for CVE-2025-43529

URL Tags
https://support.apple.com/en-us/125884 Release Notes Vendor Advisory
https://support.apple.com/en-us/125885 Release Notes Vendor Advisory
https://support.apple.com/en-us/125886 Release Notes Vendor Advisory
https://support.apple.com/en-us/125889 Release Notes Vendor Advisory
https://support.apple.com/en-us/125890 Release Notes Vendor Advisory
https://support.apple.com/en-us/125891 Release Notes Vendor Advisory
https://support.apple.com/en-us/125892 Release Notes Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43529 US Government Resource
cvelogic Threat Intelligence